Front Sidemarker Flasher Module Options

[Spoke]

There has been some interest in a module that would flash the front sidemarker with the turnsignal. The rear running/brake/turnsignal board I did for the 356 using the front turnsignal bucket from a 914 uses the same function to flash the running or brake light when the turnsignal comes on.

The flashing circuit was lifted from the 356 board and placed on this board with some modification. The board will be about 1.6in x 1in and will be enclosed in a small plastic box. The module will replace the wires which go from the front trunk into the rubber wire channel to the sidemarker and turnsignal.

Basically the wires to the turnsignal and sidemarker will be pulled out of the rubber channel and connected to the module. The module will have wires that will be fished into the rubber channel and connected to the sidemarker and turnsignal just like the OEM wiring. The OEM wiring will remain intact keeping with my goal of no cutting/screwing/gluing plug-and-play installation.


@Cairo94507

[fixer34]

So I got looking at the diagrams and wondering if this will work. Need 2 small relays and 2 diodes. Should be able to mount on a small PCB.

Turn signal feeds thru N/C contact on TR relay, diode prevents backfeed to running lights.
Running light likewise feeds thru RR relay. Also energizes TR relay
When running lights on, and turn signal activated, Flasher pulses the running lights relay, effectively turning them off. So the side marker actually flashes opposite of the front and rear lights.
Minimal stock wiring disruption and should work for incandescent, LED, or a combination.

 Relay_board.pdf ( 1004.76k ) Number of downloads: 41

[Spoke]

So I got looking at the diagrams and wondering if this will work. Need 2 small relays and 2 diodes. Should be able to mount on a small PCB.

Turn signal feeds thru N/C contact on TR relay, diode prevents backfeed to running lights.
Running light likewise feeds thru RR relay. Also energizes TR relay
When running lights on, and turn signal activated, Flasher pulses the running lights relay, effectively turning them off. So the side marker actually flashes opposite of the front and rear lights.
Minimal stock wiring disruption and should work for incandescent, LED, or a combination.

 Relay_board.pdf ( 1004.76k ) Number of downloads: 41

Looks like a cool circuit. Pretty much what I'm doing. I have the steering diodes and instead of relays I'm using FETs although I only have one FET. The FET is controlled by a comparator circuit which monitors the turnsignal and turns the FET off.

The PCB is turning out to be a small part of this assembly. Between having 30 individual wires and 40 spade crimp connectors, assembly of the wires is the most intense process.

[fixer34]

So I got looking at the diagrams and wondering if this will work. Need 2 small relays and 2 diodes. Should be able to mount on a small PCB.

Turn signal feeds thru N/C contact on TR relay, diode prevents backfeed to running lights.
Running light likewise feeds thru RR relay. Also energizes TR relay
When running lights on, and turn signal activated, Flasher pulses the running lights relay, effectively turning them off. So the side marker actually flashes opposite of the front and rear lights.
Minimal stock wiring disruption and should work for incandescent, LED, or a combination.

 Relay_board.pdf ( 1004.76k ) Number of downloads: 41

Looks like a cool circuit. Pretty much what I'm doing. I have the steering diodes and instead of relays I'm using FETs although I only have one FET. The FET is controlled by a comparator circuit which monitors the turnsignal and turns the FET off.

The PCB is turning out to be a small part of this assembly. Between having 30 individual wires and 40 spade crimp connectors, assembly of the wires is the most intense process.

Yea, I figured there was a way to do it with modern electronics, I just went 'old school' to see if it would work.
A lot easier to draw out on paper than to integrate into an actual wiring harness.